Patents by Inventor Kyusei Hasegawa

Kyusei Hasegawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Micelle solution compositions for recovering crude oil
    Patent number: 4528105
    Abstract: A stable micelle solution composition for recovering crude oil, which can form a homogeneous micro emulsion against brines in a wide range of salt concentrations.In a micelle solution composition comprising a hydrocarbon, brine, and a surface active agent, the above stated stable micelle solution composition can be obtained by specifying the surface active agent to be a mixture of (a) an ethylene oxide and propylene oxide block polymer, (b) an alkylbenzenesulfonate, (c) a polyoxyethylene alkyl ether sulfate or polyoxyethylene alkylphenol ether sulfate, and (d) a polyoxyethylene nonionic surface active agent other than the agent specified in (a).
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: July 9, 1985
    Assignees: Teikoku Oil Co., Ltd., Kao Corporation
    Inventors: Hiroshi Ito, Kyusei Hasegawa, Takashi Takeuchi, Takayuki Ikenaga